Car truck



Nov. 21, 1944. R, B, CQTTRELL l2,362,989

CAR TRUCK Filed Dec. l5, 1941 3 sheets-sheet 1 INVENT OR.

" @wcomw BY Q v EHU/Tim! Nov. 21, 1944.

R. co'rTRELL CAR TRUCK Filed Deo. 13, "1941 3 Sheets-Sheet 5 Patvented Nov. 2l, 1944 :Roberti-f3." CottrelLfChicago, `Ill., assignor tov American' SteelFoundries, Chicago, Ill., a corl `poration of"Ncw-Jersey Y f vmspl'icauon December 13, 1941, serial N0. 422,804 K' '31 claims, 01. 10s-197) vMy inventionfrelates to railway freight car trucksand particularly tovlan improvement in a well-known form' of four wheel Tfreightcar truck Whichqcomprisesispaced'truss 'type side frames, a connectingv bolster, and an'finterlocking member and sideframe together; i -f The general object'o'f my* invention is to l devise a four 'wheel' freight can trckno'f the above-mentionedk l general fdesign wherein the interlocking at eachend of the bolster serving to tie the'bolster bolster mayaser've also vasameans of actuating .a friction device or'snubbing means associated with the'cartruc'k. 7

A particular object ofmyinvention is'to devise such .a car `truclr'zasfthat described wherein they bolster and side frare"interlocking'memberiinay be formed with Aend :portions with diagonally arranged surfaces fory f 'abutment 'with' complementary surfaces of frictionpshoestwhichrmay .befV

'mounted Ainv the respectivecolumns of veach* side frame in such *manner Vasto', 'aord'ffi'ictional engagement withv vcer.tain"Walls '-of V'said'columns A` different 'objectofcmyflinvention isct'odevise a freight car truck con'iprising spaced sideirames, a bolster, v'and interlocking members wherein' the interlocking members `may have end portions extending into the columns' of *tlie's'de framefor ractuation of friction "shoes, resiliently :mounted therein, the engagement)- of said interlocking member end portionsz witheachfriction shoe-being such as to urge the; shoeinto ifrictionalj engagement with-arpluralityroffriction walls afford' y `Amore specific-object .of'zmyinvention'isto -devise suchafreight'rcar'truck `a'sthat described member maybeaifordedfreversely rarranged I-di- 'agonal friction. faces ttor l'engagement respectively with complementaryiiac'es -iof frictionshoes and' whereinfsaidfrictin #faces may yhavetaper in two directionsyth'at ispboth longitudinally and transversely of the^tru`ckzso Ythat'theengagement of the interlocking member 'Withfthef shoe's -will be effective to urge the shoes `apart and at thesamef timeto urge 'ea-ch ishoe'f into engagement `with a plural-ityf',frictiomwallsfafforded on the` adjacenll'sideframe'column:

ment as vthatdescribed whereinthe side frame tension `member beneath? the bolster openingmay be of box-section'witha widened topichord formed with upstandingi'flangeszvdeninga spring :seat

'My invention comprehends such an arrange-A Office `November, 5, 1940, and wherein Vthe upstanding flanges of, said tension-member con- ,Verge to merge vwith the 'side Walls fof the columns at opposite, sides of 'the bolster opening -said substantially as-g'described .t-jin'wmy' 'Patent No.

2,220,218, issuedfiby v`thev United-y States Patent structure permitting a relatively lowr spring seat on said tension member and thereby accommodating, within present standard side .frame heights, a longer 4travel .spring for support of the superposed bolster. Y

1 Yet another object of my invention is to devise a railway freight car truck utilizing relatively long travel 'bolster supporting springs, certain of which springs may be positioned directlyunder .the bol- -ster end and other of whichlmaybe positioned under the friction means actuated by the bolster interlocking member, saidl springs associated with thevfrictionvshoes and having a length. ap-

iproximately equalftothat ofthe springs directly .supportingthe bolster.4 l e Figure 1 is a fragmentary side elevationof a railway car truckembodying my invention, only vone end of the truck `structure being shown as thearrangernent is `identical at opposite ends thereof.y 'y ,Figure2 is a fragmentary top plan view of the truck structure shown in` Figure 1,

Figure 3 is al sectional-'view yinthe transverse vertical plane approximately as indicated by the line 3 3 of FigureA .1, the section -being taken through the columns andthe friction device supported "therein, ,l

Figure 4 is a fragmentaryl sectional view taken in Vthe transverse yvertical plane bisecting the truck and as indicatedby the line 4 4 ofFig- Vurel.y l

Figure5'is `alfurther fragmentary sectional View taken in the transverse horizontal plane `substantially as indicatedby the line 5-5 vof Figure 1-. y f

Figures 6, 7, and 8 showfone embodiment of my novely form of bolster and side frame interlocking member, Figure 6 being atop kplanview thereof, Figure 7 a side elevation, and Figure, 8 an end View.v

Figures 9, 10, and 11 show my novel form of friction shoe in one embodiment, Fig-ure 9 being a` tol)v plan View thereof, Figure,` 10 a side lelevation, and Figure 11 a front elevation. l

Figure 12is:a fragmentary top plan View corn- Y parable to the View of-Figure 2 showing a further embodiment of my invention. kFigure y13 isa fragmentary side Aelevation comparable vto the View of Figure 1 further illustrating the embodiment shown in Figure 12.v v Figures 14- and 15 areviews `of a-further ember generally designated 66.

bodiment of my novel form of interlocking member, Figure 14 being a fragmentary side elevation, l

and Figure 15 an end view thereof.

Figures 16, 17, and 18 show my novel form of tion, the transverse web l2 of which may extend vertically upward from the top web I4 of the tension member to adjacent the top of the bolster opening as indicated at I6 (Figure 3) and the said column may comprise also an inboard wall I8 (Figure 5) and an outboard wall 20, each' of which may be flanged at the bolster opening edge as at 22 and 24 to afford inboard and outboard bolster guide surfaces 26 and 28. Each inboard and outboard wall of the column may merge adjacent its lower end as at 30 with the converging end portion of the upstanding flange 32 at the adjacent side of the tension member, said ytension member comprising also the bottom web 34 as well as the inboard'and outboard walls 36 and 36, the structure of said tension member being substantially that described in detail in my above-mentioned Patent No. 2,220,218. The spring seat on the top of the tension member at the bottom'of the bolster opening thus is protected at each side by the upstanding flange 32 and said' spring seat extends longitudinally of the frame the full distance between the upright Webs l2, l2 of the respective columns so that said spring seat may have relatively great length and afford seating for the springs within the columns as well as between the columns on a single level.

The bolster guide surfaces 26 and 28 may extend from the junctures of said columns with the tension member vertically upwardly to the shoulder or offset portion 42 (Figure 1), said shoulder defining a widened portion of the bolster opening and said widened portion f having a depth A slightly greater than the height B of the guide lug 44 to permit application or removal therethrough, saidguide lug being formed on the adjacent side wall 45 of the bolster generally designated 46, said bolster having a box-section comprising the top wall 48, the bottom wall 50, and the central reinforcing rib 52. Each bolster guide lug may be generally rectangular in form having the depth shown in width shown in the View of Figure 2, said width being such as to afford slight clearance of said guide lug between the lateral walls of the U- shaped wear plate 54 which may be welded as at 56, 56 within the adjacent column.

Positioned on the spring seat 40 may be the main bolster supporting springs diagrammatically indicated at 58, 58 porting springs diagrammatically indicated at 88, said main springs being confined at their lower ends by the upstanding flanges of the tension member and at their upper ends by the spring plate 62 upon which the bolster may seat as at 64. Recessed within the bottom wall 5!! of the bolster 45 and extending transversely thereof may be the bolster and side frame interlocking memsaid interlocking member having the detailed form best seen from a consideration of the views of Figures 6 to 8 inclusive and comprising a central upstanding lug the view of Figure l and the and the auxiliary sup-Y 88 which may extend through the bottom wall 50 of the bolster into the opening 10 cored in the central rib 52 thereof wherein said lug 68 may be keyed in any convenient manner as by a cotter key inserted as at 12. The interlocking member 66 comprises a base plate 14 relatively wide at the central portion thereof which may be defined by oval margins merging with generally rectangular end portions 15, 15 somewhat thicker, the juncture of each end portion with the central plate portion 14 being reinforced by the upstanding flange 16 which may project through the slot 18 in the adjacent side wall and bottom wall of the bolster (Figure 1) as additional means of tying together the bolster and interlocking member. Each end portion 15 may present on its bottom surface diverging friction faces 80, 80 (Figure 8) which may have engagement as at 82, 82 with the complementary surfaces formed on the shelf portions 84, 84 of respective friction shoes 86, 86, and said friction shoes may also present friction areas for engagement as at 88 and 90 with adjacent walls of the wear plate 54; said wear plate lining the walls of the adjacent column in manner already described. The friction shoes 86, 86 in each column may be supported by the adjacent auxiliary spring 60, the upper end of which may be afforded a spring seat as at 92 by the shelf portions 84, 84 of one pairof shoes.

The detail of each friction shoe is shown in Figures 9, 10, and l1. It will be noted that each shoe comprises a rectangular friction wall 94 representing over its entire area a flat friction surface 96 for abutment at80 with the adjacent Wear plate 54 as already described, said friction shoe-presenting opposite the surface 96 a shelf portion 84 with a diagonally arranged top surface 98 which may engage as at 82 with an adjacent complementary portion of the interlocking member, as already described.

The bottom surfaces of the shelf 84 may define the spring seat 92 and below said shelf 84 the wall 94 may present a concave configuration best seen at |00 in the top plan View of Figure 9, said configuration serving to connne and properly position the auxiliary spring 60 between adjacent shoes.

The modification illustrated in Figures l2 and 13 is substantially identical tothat just described as far as the general truck structure is concerned and the views are fragmentary and designed only to illustrate the differences between this modification and that previously described. As illustrated, the side frame generally designated 282 comprises the tension member 204 and the column 206 defining therewith the bolster opening 208, said bolster opening having at the top a widened portion of restricted depth as described for the previous modification and below said widened portion may present the outboard and inboard bolster guide surfaces 2li! and 2I2 formed on the flanges 2|4 and 2|6 lof the respective side walls 2I8 andi220 of the column 206, said column 206 being of U-section and also comprising the transverse web 222 adjacent the window opening 224.-. The column may be lined by the wear plate 225 in manner identical to that described for the previous modification, said wear plate being secured as by welding at 228, 228 to the respective side walls of the column. Invthis modification the bolster 230 is identical with the bolster of the previous modification, the side wall of said bolster having guiding 'engagement against the surfaces .2|0 and 2l2 and presenting therebetween a rec tangular lug 232 of such depth as to admit it in interlocking-imember A -seat against' the bottorn seatrprovidedratl A* v l itishould'. be notedfthatithe f ,forms ofthe device will; oi

,rnthiemedictationanefeisterfandfsidename rectangular end portionz nithis 4; isiinterlockedravithfthe bolster 'in-fiiderica'l finanner SWtil ith-.at ,fithe previous ,modification said; interiookingy fmember being v,-mo diiied,v however, with irespejct .reach -and'presentin'g=,aend; portions for actuation of friction means in respective columns, each `rof :said t-:frirtion:means @comprising4 spaced z' friction shoes .'.zabntting rrespectime walls of 'the ad-jacentfcol- :and :presenting :spring .seats forvt'abutment fir/ith.;certainv ofsaid` springs, vLsaid friction ,shoes frhavingfreversely arranged y'tapering ,friction :surtraces fin-:engagement z with icomplementary .sur-

:i aces :zon Y:theadi acent end f'portions, feachrof said -eolumnsiipresenting..,.aiong :intermediate portions `thereof spaced bolster lguide :surf-aces terminating at their npper f tends tat ',:shoulders on, :said :columns dening za relatively 'widened :portion @fof said:boiste-r;opening,A said Abolster jhavinggguide `rings ;at opposite sides thereof :ofxxa height-less -than 4vthe l.iiepthiioi? said 'widened portion :of said @bolster vopening, said :guide flugs V:beingereceivsable:i)etweentheagnide'fportions.fonxadjacent'coln veumns. s Y l i2. 'In va railwaytcarztruck. ofzquick wheelzchange typeJ Viaitruss ,zside-Jirame :having tension :and

' *compression memberstand spacedcolumns' delin- ;fo rthe. previous modicationrexcept forgthe arrangement of @the friction :surfaces: 246 and zin- :cludingfthe verticalsirictionzwall 5251i Whichrmay 1 seat :against an adjacent lateral .wallxof fthereol- `umrrasrai:2:52 (Figure ,12) Ain like manner .with the previous 'modification' The'fshoe :structure may lalso include :the ,'fshelf f1 :portion Rilland :below said Lshelfcportion':onesidefoffithe wall;

vmay present --the concave trace .1256 asxpositoning meansA for :the 4e'uijacent:springwhich may .01 l,then-shelf f ,.254 on `the Inthis-Inodifcation complementaryl friction surfaces 244 and 246,0n

l thefendof theinterlookingtmeniberand the friction shoes :taper in two--;directions, A-- that :is-m01;

only laterally yof V`the truck -.but longitudinally thereof as `may bef-seen :at fZGU-(Figurel-B) lso that eachirictionfshoe 4248isurged intoyengage.-

ment against the vs/fear; :plate :2 26 notfionlyaat .252,1252- towardthe lateral walls of,v the columns;

but alsosaid shoes y,are urged into engager'nent v with said wear .plate longitudinallyeof the;;truck rto aioid frictional-seatingagainst the transverse Iportion of said-wear plate as at--262(1iiigurel2) i and thuseach frictionfshoe isfin'a mannerfurged into onecorner of thecolumnfand:hasirictional,

engagement against twosurfaces thereon substantiallyfat rightangles to eacht-other,

.Itsfis to be .understood thatl I:dov-,not wish vto be limited .by the texacti-e1nbodimentszof the sdevice shown yWhich are Amerely :byv Wayofvillus-y tration Aand not limitationas various and other course. be apparent to thoser skilled in the artqwithout departing Jfrom the ,spirit of the .invention .orlthe scope ,of

the claims.

.I claim: j y. n 1. In a railway .car truckoiquicklwheel change type, a side framehaving tensionand.compres-A sion members `and -spaced,co1umns defining a central bolster opening andspacedwindowlopen- A ings, said tension member havingaboxfsection beneath said bolster opening .Witha widenedgtop chord and upstanding` flanges dening c a lspring seat, each of vsaid columns ,having ,a Usection with inboard and outboard walls,andatrans verse web dening .one margin of (the Iadjacent window opening vand defining Y,one end of said spring seat, relatively long. travel springsV on said spring seat, a bolster Nseated.' on certain oisaid springsin said bolster opening, andan interldcking member recessed inthe bottomof said'bo'lster ing.:a:,boisteriopening,eachrof lsaid columnshav- `inginboard zand outboardvvvallsY and Qa itransaverse web,fWear"plates-` on: the finner faces .of ,said fwalislandfwebaffeach of said:co1umnshaving inxboardfand-outboard flangesidening bolster guide surfaeesfandV :terminating ,short of said "compression member to define therewith:avvvidenedv porlation .Y of `said bolster -t:0pening, said "tension memberslhaving a box-section v.beneath said #bolster opening rwith.y a widened top :chord *and npstandingl flanges deninga .spring seat .extending :between the Webs of-saidfcolumnsspringsonrsaid spring 'seat, laffbolsterxseatedvony :certain of-asaid springs in:l engagementuwith :said j guide suriaces,

.l :and-fa member J`inter-'lockedA with :said bolster.rand

-having-en-d sportonsextending tinto said columns for .actuation fof friction devicessupportedfon other-1 of` :said springs,y :sa-id bolster presenting :at

:opposite sides tiiereofguidek ,padsfl receivable' ibe- :itween the :guide surfaces of respective columns .andeachof said guderpadsihavinga height'less vthan thedepth of the widened :portion .of said- 457 '-mantling Vof -saidrbolster inl-said :opening 'fWhile msaid springs `and .interlocking xmember :remain ninvnormaliassembled'relationship.

bolster :opening arto 4permit-..a.ssembling` .or :dis-

3.-{'I-n=a railway--carftrzuck'of quick Wheel .change j type, a truss lside framehavingltension .and Comf-pression fn'iembers..l and spaced* columns-deningxa v'bolster opening,eachy of saidcolumns fhavingsa *U *section with Yinboard and `outboard :walls and atransverse web, lWear plates lonthe inner faces of said f walls andwebs,Y each :of `said columns having inboard and outboard anges-:defning -bolsterguide surfacesand terminating short of said.A com-pression 'member to :define therewith a 'widened portion ofsaidbolsteropening, said "ten- "sion vmember having a box-section :beneath said Y bolster openingrfwith a widened top chord :and

v`upstanding anges fdening a' 4spring seat-eX- tending between the websof-saidrcolumns, springs Ionfsaid springseat, faboister-seated-on certain v-01 said-springs. yin engagement withy said guide surfaces, and -a member V:interlocked :with said bolster 'and @having -end portions extendingninto 4wsaidcolurnris for-support on other of said springs,

=saidbolster/presenting at oppositev sides thereof guide pads receivable between the guide `sur-- faces Jof respective columns and each-of Ysaid fguidepads 'having a *height lessthan 'the depth yof Jthe/widened Jportion of said bolster yopening to permitassembling lor dismantling vof Isaid :bolster in said openingwhilesaid -Springsand interlationship.

4. In a railway cartruck, a truss si-de frame `having tension and compression members and spaced columns defining a kbolster opening, each of said columns having inboard and outboard walls and a transverse web, wear plates on the inner faces of said walls and webs, each of said columns having inboard and outboard flanges Vdefining bolster guide surfaces and terminating said bolster and having end portions extending` into said columns for actuation of friction devices including shoes supported on other of said springs, each of said friction shoes'havin-g complementary face engagement with the adjacent end portion of said interlocking member, said member being operative to urge both of said shoes into engagement with the web of said columnl and each of said shoes into engagement with one wall thereof.

5. In a railway car truck of quick wheel changetype, a

side frame having tension and compression members and spaced columns defining a central bolster opening and spaced 'window openings, said tension member having a box-section beneath said bolster opening with a widened top chord and upstanding flanges defining a spring seat, each of said columns having a U-section with inboard and outboard walls and `a transverse web defining one margin of the adjacent window opening and defining one end of said spring seat, relatively long travel springs on said spring seat, a bolster seated on certain of said springs in said bolster opening, and an interlocking member recessed in the bottom of said bolster and presenting end portions for actuation,H

of friction means in respective columns, each of vsaid columns presenting along intermediate portions thereof spaced bolster guide surfaces terminating at their upper ends at shoulders on -said columns defininga'relatively widened por-Uv tion of said bolster opening, said bolster having guide lugs at opposite sides thereof of a height less than the depth of said widened portion of said bolster opening,

each guide lug being receivable between the guide portions on the ad-A jacent column.

6. In a railway car truck, a truss side frame having tension and compression members and spaced columns defining a bolster opening, each of said columns walls and a transverse web, wear plates on the inner faces of said walls and webs, each of said columns having inboard and outboard flanges defining bolster guide surfaces and terminating short of said compression therewith a widened portion of said bolster opening, said tension member having a box-section beneath said bolster opening with a widened top `chord and upstanding flanges defining a spring seat extending between the webs of said columns, springs on said spring seat, a bolster seated on certain of said springs in engagement with said guide surfaces, and a member interlocked with said bolster and having end portions extending into said columns for actuation of frichaving inboard and outboard* member to dene [springs in said bolster .75.

`locking member remain'in normal assembled retion devices including shoes supported on other of said springs, each of said friction shoes having complementary face engagement with the adjacent end portion of said interlocking member, said member being operative to urge said friction shoes apart and into engagement with spaceda walls of the adjacent column, and into engagement with said transverse web.

7. In a railway car truck of quick wheel change type, a truss side frame having tension and co-mpression members and spaced columns defining a bolster opening, each of said-columns having a U-section with inboard and outboard walls and a transverse web, wear plates on the inner faces of said walls and webs, each of said columns having inboard and outboard flanges defining bolster guide surfaces and terminating short of said compression member to dene therewith a widened portion of said bolster opening, said tension member having a box-section beneath said bolster opening with a widened top chord and upstanding flanges defining a spring seat extending between the webs of said columns, springs on said spring seat, a bolster seated on certain yof said springs in engagement with said guide surfaces, and a member interlocked with said bolster and having end portions extending into said columns for actuation of friction devices including shoes supported on other of said springs, each of said friction shoes having complementary face engagement with the adjacent end portion of said interlocking member, said member being effective to urge said shoes apart and to urge each of said shoes into engagement with the web of said column and one wall there- 8. In arailway car truck, a truss side frame having tension and compression members and spaced columns defining a bolster opening, each of said columns having inboard and outboard walls and a transverse web, wear plates on the inner faces of said walls and webs, each of said columns having inboard and outboard iianges defining bolster guide surfaces and terminating 'guide surfaces, and a member interlocked with said bolster and having end portions extending into said columns for actuation of friction devices supported on other of said springs, each of said friction devices comprising spaced friction shoes having diagonal face engagement with the adjacent end portion of said interlocking member, and urged thereby into engagement with the wear plates on said transverse web and one of said'walls of the adjacent column.

9. In a railway car truck, a side frame having tension and compression members and spaced columns defining a central bolster opening and spaced window openings, said tension member having a box-section beneath said bolster opening with a widened top chord and upstanding flanges defining a spring seat, each of said columns having inboard and outboard walls and a transverse web, relatively long travel springs on said spring seat, a bolster seated on certain of said opening, and an interlocking member recessed in the bottom of said member extendingbetween the Webs-of -said col-A umns,l springs onv Saidsprin-g-seat, abolster ex jacent column. and presenting spring seats for abutment withvk certain of .saidnsprings saidl fric-v tion shoes having` reverselyarranged tapering friction'surfaces in engagement with; comple mentary surfaces on'stheadjacent endportions.

10. Ina'frailwaycar truck,y a side framefhavingtop andbottonrmembers and spaced. col,

umns defining a bolster opening, each of saidy columns having a U-section with?v inboardyand outboardv Walls andaftransverse.- webdening the margin of an adjacent window openinglanspring seat on said tension member extending'fbetween. the webs of said columns,springs on said'spring seat, a` bolsterA extendinginto'said bolster openingand seated on'rcertainjof sa-idsprin'gs, and a memberl interlockedwith said bolsterandv having .end portions 1 extending: within said .columns for actuation of ,friction devices'therein, eachrof.y said' friction devices' being. supporlted `on other of saidlsprings and comprising spaced-friction' Shoes having diagonal face engagement-with ther adjacent end portions'the engagement of saidend portion with said frictlonshoes being operativetourge'both of said shoes into frictional engagementvwithr theaweb of the adjacenticol,V umn andeach of said shoes into engagement-with one wall thereof.

11. Infa railway cartruck,.a` side'frame having top and bottom members and spaced col--A umns defining `a bolsterl opening, each of said columns, having." inboard and outboard walls and'` a transverse web; a .spring-seat on said tension.

, member extendingbetween the Webs ,of .sa-idoolumns, springs `on"said1springv seat,y az-bolster ex-V tendinginto' said. bolster opening andseatedon certain of saidxsprings, .and amember interlocked with said-bolster and havingv end portions `ex tendingl within said columns, each of, said columns presenting. inboard. and Aoutboard bolster guide surfaces terminating shortk of saidv com--V pressionim'ember to define therewith a widened portion of 'said bolster opening, said bolster pre. senting guidelugs at `opposite sides thereofre-s ceivable between the guide` surfaces lof respective columns. each of saidlugsyhavingaY height less than the'depth of saidwidenedportion.

l2. In a -.railwayfcar"truck,. aside framef hav ing top and bottom members and spaced col umns defining ,a V.bolster opening, each: of said -colf umns having a U-sectionswith inboard and outboard walls andla transverseA web defining.' the margin rof ansadjacentwindow opening,a spring seat onsaid'tension' member extending'between the webs of said columns,l springs on saidY spring seat, a bolsterlextending intosaid bolster open-A ing and se'atedon'` certain vof said springs, and a member vinterlocked with said bolster and havingv end 'portionsv extending within saidtcolumns for actuation ofA friction devices therein, each offsaid; friction devi'cesgbeing supportedy onv other of said springs `and comprising spaced-.friction :shoes having' diagonal face Iengagement Awith the adjacent end portionglthe'engagement of said' end portion with said friction shoes.I being operative yto urge each of saidfshoes into engagement Withay wallv and a web of the adjacent column.v f `13. In a railway rcar truck,a sideframe havtending into said bolster'openinfg and-seatedon certain of said springs, and a member-inten "f locked :with said bolster and havin-g end `portions friction shoes apart and intoengagement with opposite corners ofthe adjacent column.

14. .In a4 railway car truck,v avtr-uss side frame having tension and compressionv membersvandspaced columns defining ya bolster opening,v each1- of saidA columns. having inboardl and outboardr walls and a transverse web, wear plates on the inner faces of said walls and webs, each ofsaid columns havingl inboard and outboard flanges denng bolster guide surfaces andzterminating short of said compression member to -dene therewith a widened `portion of l said bolster opening, said tension member having a box-section be-v neath saidA bolster opening with` a widened ltop chord and upsta-ndingfianges defining a springseat extending between the vwebs of said* co1-A umns, springs on said springseat-a-bolster seated .on certain of saidisprings irl-engagement with said guide surfaces, and aV member interlockedwithsaid bolster and having endl portions extending into said columns: for support on-other of said springs, damping meansassociatedwith friction shoes seated tlfiereon in engagement with anA adjacent end of said linterlocking member,

y said interlockingmember being operativeto urge each of said shoes into 4frictional,engagement with saidwear plates on. said web `andon oneof said` walls.

15. In a railway car truck, a trussside frame having tension and compression members and spaced columns defining abolsterfopening, each` ing top arid bottom members and spaced col.

columns having inward-.and outboard 'wallsfand umns defining. abolster' opening, each of said of saidv columns having inboard and outboardwalls and atransverse web, wear plates. onthe inner faces of .said walls andwebs, each of said. columns havinginboard. and outboard.. flanges defining bolster guide surfaces andj terminatingshort of said compressi-on member to define therewith a widened. portion ofsaid bolster opening, said tension member having a box-section beneath said bolster opening with a-widened top chord and jupstanding flanges defining aspringA seat extending between the webs` of. said co1- umns, springs on sai-d .spring seat, a.bolster seated on certainof said springsinengagement with'4 said guide surfaces, and a member ,interl'ocked'` with said bolster andhaving end .portions eXv tending into said columnsfor `actuation of friction devices supportedon .other ofsaid springsf each of said friction devicesgcomprsing, a shoe engaging the wear plates on saidtransverse web anclone of saidk walls of the adjacent column.

16. In a railway -car truck, aside.y frame hav- .ing top and bottom membersand-spaced columns defining a bolster opening, eacliofsaid columns -having a- U-,section with-inward.andloutboard walls and a vtransverse we b.- defining. the `margin of an adjacent window opening, aspringv seat on saidftensionmemberY exten-ding between. the webs of said columna'springs on., said'. spring.

seat, a bolster extendingintosaidbolster. opening and seatedon'certainosaid springs, anda member interlo'ckecl`A wit'hry said bolster and hav-l having diagonal face engagement with ed with each of said other ing end portions extending within said columns for actuation of friction devices therein, each of said friction devices being supported on other of said springs and comprising spaced friction shoes the adjacent end portion, each of said shoes having frictional engagement with a wall and a web of the adjacent column.

17. In a railway car truck, a side frame having tensionand compression members and spaced columns defining a central bolster opening and spaced window openings, said tension member having a box-section beneath said bolster openin-g with a widened top chord and upstanding flanges defining a spring seat, each of said columns having inboard and outboard walls and a transverse web, relatively long travel springs on said spring seat, a bolster seated on certain of said springs in said bolster opening, and an interlocking member recessed in the bottom of said '-1 bolster and presenting end portions for actuation of friction means in respective columns, each of said friction means comprising shoe means in frictional engagement with said web and one of said walls.

18. In a railway car truck, a side frame having top and bottom members and spaced columns defining a central bolster opening and a spaced window opening, each of said columns having inboard and outboard walls and a transverse web extending vertically between said members, a one-level spring seat on'said tension member, springs thereon, a bolster supported on certain of said springs in guiding engagement surfaces on each ofl said columns, and a member interlocked with said bolster and having rectangular end portions guidably received within said columns and operative to actuate friction devices supported therein upon other of said springs, each of said devices comprising opposed shoes each in frictional engagement with said web and one of said walls. Y

19. In a railway car truck, a side frame having top and bottom members and spaced columns defining a bolster opening, each 'of said columns having inboard and outboard walls and a transverse web defining the margin of an adjacent wndow opening, a spring seat on said tension member extending between the webs of Said columns, springs on said spring seat, a bolster extending into said bolster opening and seated on certain of said springs, and a member 'interlocked with said bolster and having end portions extending within said columns for support on other of said springs, friction means interposed between each end portion and the supporting spring and including a friction shoe urged into engagement with said web and one of said walls by said interlocked member.

20. In a railway car truck, a side frame having top and bottom members and spaced columns defining a central bolster opening and a spaced window opening, each of said columns having inboard and outboard walls and a transverse web extending `vertically between said members, a one-level spring seat on said tension member, springs thereon, a bolster supported on certain of said springs in guiding engagement with spaced surfaces on each of said columns, and a member interlocked with said bolster and having rectangular end portions guidably received within said columns and supported therewithin on other of said springs, friction means associatsprings and comprising a frictionI shoe engaging the adjacent end with spaced portion and urged thereby into frictional engagement with said web and one of said walls.

21. In a railway car truck, a side frame having spaced columns,each column including angularly related webs, a bolster spring-supported on said frame between said columns, a member interlocked with said side frame and bolster and extending within said columns `for actuation of friction devices spring-supported therein, each of said friction devices comprising a friction shoe in frictional engagement with a plurality of said webs.

22. In a railway car truck, a side frame having spaced columns, each column including angularly related webs, a bolster spring-supported on said frame between said columns, a member interlocked with said side frame and bolster and extending within said columns for actuation of friction devices spring-supported therein, each of said friction devices comprising a plurality of shoes each having frictional engagement with a plurality of said webs.

23. In a railway car truck, a side frame having spaced columns, each column including angularly related webs, a bolster spring-supported on said frame between said columns, a member interlocked with said side frame and bolster and extending within said columns for actuation of friction devices spring-supported therein, each of said friction devices comprising a plurality of shoes, both of said `shoes engaging one of said webs and each of said shoes engaging other of -said webs respectively.

' 24. In a railway car truck, a side frame having spaced columns defining a bolster opening, each of said columns comprising a web and walls angularly related withrespect thereto, a bolster assembly spring-supported` in said opening and including a member interlocking said side frame and bolster, said interlocking member having end portions extending into the adjacent Vcolumns for actuation of friction devices therein, each of said friction devices comprising spring-supported friction shoes in operative engagement with the adjacent end portion, said operative engagement being effective to urge said shoes in opposite directions and into frictional engagement with said web and said walls respectively.

25. In a railway car truck, a' side frame having spaced columns defining a bolster opening, each of said columns comprising a web and walls angularly related with respect thereto, a bolster assembly spring-supported in said opening and including a member interlocking. said side frame and bolster, said interlocking member vhaving end portions extending into the adjacent columns for actuation.. of friction devices therein, each of said friction devices comprising spring-supported friction shoes in operative engagement with the adjacent endportion, said operative engagement being effective to urge both of `said shoes into engagement with said web and one of said shoes into engagement with each of said walls.

26. In combination, a sideframe having spaced columns at opposite sides of a bolster opening, each of said columns having a plurality of angularly arranged webs, a bolster assemblyspringsupported in said opening and including an interlocking member, said interlocking member having end portions extending intoY the adjacent columns, damping means in each column in operative engagement with adjacent end portions, each of said damping means comprising a plurality of friction shoes urged in opposite directions by the adjacentfend portion, the shoes of each damping means engaging a common Web of the adjacent column and respectively engaging i spaced webs thereof.

27. In combination, a side frame having spaced columns at opposite `sides of a bolster opening,`

each of said columns comprising a plurality of angularly related Webs, a bolster assembly springsupported in said opening and including an interlocking member with end portions associated with respective columns, damping means springsupported in each column, each of said damping means comprising a friction shoe in operative engagement with the adjacent end portion, said engagement being effective to lurge said shoe into engagement with a plurality of said webs.

28. In combination, aside frame having spaced columns at opposite sides of a bolster opening, each of said columns comprising a plurality of angularly related webs,'a bolster assembly spring-A supported in said opening and including an interlocking member with end portions associated.

with respective columns, damping means vspringsupported in each column, each ofsaid damping -means comprising'a plurality of friction shoes in operative engagement with the adjacent end portion, said engagement being effective to urge said shoes oppositely and each into engagement with a plurality of said webs.

2.9. In a railway car truck, a side frame hav-` ing a bolster opening with columns at opposite sides thereof, each of said columns having a plurality, of angularly related Webs, friction means including friction shoes adjacent each of n said columns, and means associated. withy said bolster and operative to urge each of said fric-v tion shoes into engagement with a. plurality of said Webs. l

30. In a railway car truck, a supporting member having spaced columns, a supported member in. guiding engagement With said columns, an

interlocking piece associated with said members friction means, each end portion having a pair of wedge surfaces and each of said surfaces sloping longitudinally and transversely of said actuator.

ROBERT B. CO'I'IRELL. 

